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authorLubomir Rintel <lkundrak@v3.sk>2018-12-02 12:12:24 +0100
committerOlof Johansson <olof@lixom.net>2018-12-03 12:39:21 -0800
commit76f4e2c3b6a560cdd7a75b87df543e04d05a9e5f (patch)
tree3bd2acc240d360de6c4978727ae2586f7384f7b8 /arch/arm/mach-mmp
parent358b5f73ce60fb1369be557c38a52e886834f44d (diff)
downloadlinux-76f4e2c3b6a560cdd7a75b87df543e04d05a9e5f.tar.bz2
ARM: mmp/mmp2: fix cpu_is_mmp2() on mmp2-dt
cpu_is_mmp2() was equivalent to cpu_is_pj4(), wouldn't be correct for multiplatform kernels. Fix it by also considering mmp_chip_id, as is done for cpu_is_pxa168() and cpu_is_pxa910() above. Moreover, it is only available with CONFIG_CPU_MMP2 and thus doesn't work on DT-based MMP2 machines. Enable it on CONFIG_MACH_MMP2_DT too. Note: CONFIG_CPU_MMP2 is only used for machines that use board files instead of DT. It should perhaps be renamed. I'm not doing it now, because I don't have a better idea. Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: stable@vger.kernel.org Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'arch/arm/mach-mmp')
-rw-r--r--arch/arm/mach-mmp/cputype.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/arm/mach-mmp/cputype.h b/arch/arm/mach-mmp/cputype.h
index 446edaeb78a7..a96abcf521b4 100644
--- a/arch/arm/mach-mmp/cputype.h
+++ b/arch/arm/mach-mmp/cputype.h
@@ -44,10 +44,12 @@ static inline int cpu_is_pxa910(void)
#define cpu_is_pxa910() (0)
#endif
-#ifdef CONFIG_CPU_MMP2
+#if defined(CONFIG_CPU_MMP2) || defined(CONFIG_MACH_MMP2_DT)
static inline int cpu_is_mmp2(void)
{
- return (((read_cpuid_id() >> 8) & 0xff) == 0x58);
+ return (((read_cpuid_id() >> 8) & 0xff) == 0x58) &&
+ (((mmp_chip_id & 0xfff) == 0x410) ||
+ ((mmp_chip_id & 0xfff) == 0x610));
}
#else
#define cpu_is_mmp2() (0)